package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.*;
import com.sky.websocket.WebSocketServer;
import io.swagger.models.auth.In;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Service
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private WebSocketServer webSocketServer;

    Orders orders=new Orders();
    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    @Transactional
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {
        //判断下单的地址是否为空
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook == null){
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        //判断购物车是否为空
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart=new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if (list == null || list.size()==0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        //向订单表插入一条数据
        Orders orders=new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(userId);
        orderMapper.insert(orders);
        //向订单明细表中插入多条数据
        List<OrderDetail> orderDetailList=new ArrayList<>();
        for (ShoppingCart cart : list) {
            OrderDetail orderDetail=new OrderDetail();
            BeanUtils.copyProperties(cart, orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailList);
        //清空购物车
        shoppingCartMapper.clean(userId);
        //返回vo对象
        OrderSubmitVO orderSubmitVO=new OrderSubmitVO();
        orderSubmitVO.setId(orders.getId());
        orderSubmitVO.setOrderTime(orders.getOrderTime());
        orderSubmitVO.setOrderAmount(orders.getAmount());
        orderSubmitVO.setOrderNumber(orders.getNumber());
        return orderSubmitVO;
    }
    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        /*JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }*/

        JSONObject jsonObject = new JSONObject();

        jsonObject.put("code", "ORDERPAID");

//


        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);

        vo.setPackageStr(jsonObject.getString("package"));



        //为替代微信支付成功后的数据库订单状态更新，多定义一个方法进行修改

        Integer OrderPaidStatus = Orders.PAID; //支付状态，已支付

        Integer OrderStatus = Orders.TO_BE_CONFIRMED;  //订单状态，待接单


        //发现没有将支付时间 check_out属性赋值，所以在这里更新

        LocalDateTime check_out_time = LocalDateTime.now();


        orderMapper.updateStatus(OrderStatus, OrderPaidStatus, check_out_time, orders.getId());

        return vo;

    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
        Map map=new HashMap();
        map.put("type", 1);
        map.put("orderId", ordersDB.getId());
        map.put("content", "订单号"+outTradeNo);
        String string = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(string);
    }

    /**
     * 订单分页查询
     * @param ordersPageQueryDTO
     * @return
     */
    public PageResult historyOrders(OrdersPageQueryDTO ordersPageQueryDTO) {

        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Long userId = BaseContext.getCurrentId();
        Page<Orders> page=orderMapper.getByUserId(userId);
        List<OrdersPageVO> list =new ArrayList<>();
        if (page != null && page.size()>0){
            for (Orders orders : page) {
                Long orderId = orders.getId();
                OrdersPageVO ordersPageVO=new OrdersPageVO();
                BeanUtils.copyProperties(orders, ordersPageVO);
                List<OrderDetail> orderDetailList=orderDetailMapper.getByOrderId(orderId);
                ordersPageVO.setOrderDetailList(orderDetailList);
                list.add(ordersPageVO);
            }
        }

        return new PageResult(page.getTotal(),list);
    }

    /**
     * 查询订单详细
     * @param id
     * @return
     */
    public OrdersPageVO getByOrderId(Long id) {
        Orders orders=orderMapper.getByOrderId(id);
        OrdersPageVO ordersPageVO=new OrdersPageVO();
        BeanUtils.copyProperties(orders, ordersPageVO);
        List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(id);
        ordersPageVO.setOrderDetailList(orderDetails);
        return ordersPageVO;
    }

    /**
     * 取消订单
     * @param id
     */
    public void cancelOrder(Long id) {
        Orders orders = orderMapper.getByOrderId(id);
        Integer status = orders.getStatus();
        if (orders==null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        if (status>2){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders canCelOrders=new Orders();
        canCelOrders.setId(orders.getId());
        canCelOrders.setStatus(Orders.CANCELLED);
        canCelOrders.setCancelReason("用户取消");
        canCelOrders.setCancelTime(LocalDateTime.now());
        orderMapper.update(canCelOrders);
    }

    /**
     * 再来一单
     * @param id
     */
    public void repetition(Long id) {
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        List<ShoppingCart> shoppingCarts=new ArrayList<>();
        for (OrderDetail orderDetail : orderDetailList) {
            ShoppingCart shoppingCart=new ShoppingCart();
            BeanUtils.copyProperties(orderDetail, shoppingCart, "id");
            shoppingCart.setUserId(BaseContext.getCurrentId());
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCarts.add(shoppingCart);
        }
        shoppingCartMapper.insertBatch(shoppingCarts);
    }

    /**
     * 管理端订单条件查询
     * @return
     */
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders> page=orderMapper.conditionSearch(ordersPageQueryDTO);
        List<OrderVO> orderVOList=new ArrayList<>();
        List<Orders> pageResult = page.getResult();
        if (pageResult != null && pageResult.size()>0){
            for (Orders orders : pageResult) {
                List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
                OrderVO orderVO=new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                String dishes="";
                for (OrderDetail orderDetail : orderDetailList) {
                    String name = orderDetail.getName();
                    Integer number = orderDetail.getNumber();
                    dishes=name+"*"+number;
                }
                orderVO.setOrderDishes(dishes);
                orderVOList.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(),orderVOList);
    }

    /**
     * 各个状态下的订单数量查询
     * @return
     */
    public OrderStatisticsVO statistics() {
        Integer toBeConfirmed=orderMapper.countStatus(Orders.TO_BE_CONFIRMED);//待接单数量
        Integer confirmed=orderMapper.countStatus(Orders.CONFIRMED);//待派送数量
        Integer deliveryInProgress=orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);//派送中数量
        OrderStatisticsVO orderStatisticsVO=new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
    }

    /**
     * 接单
     * @param ordersDTO
     */
    public void confirm(OrdersDTO ordersDTO) {
        Long id = ordersDTO.getId();
        Orders orders = orderMapper.getByOrderId(id);
        orders.setStatus(Orders.CONFIRMED);
        orderMapper.update(orders);
    }

    /**
     * 拒单
     * @param ordersRejectionDTO
     */
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        Orders orders = orderMapper.getByOrderId(ordersRejectionDTO.getId());
        //获取订单的状态 只有待接单才可以拒单
        Integer status = orders.getStatus();
        if (orders==null || status!=Orders.TO_BE_CONFIRMED){
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders1=new Orders();
        orders1.setId(orders.getId());
        orders1.setStatus(orders1.CANCELLED);
        orders1.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders1.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders1);
    }

    /**
     * 商家取消订单
     * @param ordersCancelDTO
     */
    public void adminCancel(OrdersCancelDTO ordersCancelDTO) {
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    /**
     * 派送
     * @param id
     */
    public void delivery(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getByOrderId(id);

        // 校验订单是否存在，并且状态为3
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为派送中
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);

        orderMapper.update(orders);
    }

    /**
     * 完成订单
     * @param id
     */
    public void complete(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getByOrderId(id);

        // 校验订单是否存在，并且状态为4
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(ordersDB.getId());
        // 更新订单状态,状态转为完成
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());

        orderMapper.update(orders);

    }

    @Override
    public void reminder(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getByOrderId(id);

        // 校验订单是否存在
        if (ordersDB == null ) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Map map=new HashMap();
        map.put("type", 2);
        map.put("orderId", id);
        map.put("content", "订单号"+ordersDB.getNumber());

        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }
}
